Culvert.



J. P. DOLAN.

GULVERT.

APPLICATION FILED APR. 15, 1914. 1 1 1 0,047. Patented Sept. 8, 1914.

In +1] W ,1; NH M h u I l '1 THE NORRIS PETERS 60., PHOTO-LITHO WASHINGroN, D. C.

JAMES P. DOLAN,

OF REVERE, MASSACHUSETTS, ASSIGNOR TO PENN METAL COMPANY, OE BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

CULVERT.

To all whom it may concern Be it known that 1, James P. DOLAN, a citizen of the United States, residing at Revere, county of Suffolk, State of Massachusetts, have invented a certain new and useful Improvement in Culverts, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention has for its object a new and improved form of corrugated iron culvert, and particularly a culvert which can be conveniently shipped in nested condition and which can be assembled without the use of tools. In culverts of this class as heretofore ordinarily constructed, it has been ind that the projection of lips or edges from the sides of the two halves of the culvert practically prevent the culverts being shipped in nested form, which is essential, as otherwise the expense for transportation greatly increased. halves of the culvert have been secured together by a series of bolts projecting through the wall of the culvert from the inside, it has been found to be a matter of considerable difiiculty to assemble the culvcrt since it. is necessary to bring the holes into accurate registration with each other and to hold the head of the bolt on the inside of the culvert with some tool, as for instance a screw driver or pliers.

My invention affords a construction of culvert which can be conveniently and perfectly nested for shipment, and which can be assembled without the use of tools on the inside of the culvert. Furthermore, if it is desirable at any time to get at the interior of the culvert after it has been installed, as for instance in case it should become clogged by mud or silt, this can be accomplished without removing any nuts or screws, which has been found practically impossible be cause the nut or screw had to be held on the inside of the pipe, the ordinary procedure being to cut the bolt. The culvert embodying my invent-ion is also constructed in such manner that leakage of water into the culvert from the outside is practically impossible, and therefore silt is not so likely to accumulate in the interior of the culvert.

The invention will be fully understood by reference to the following description taken in connection with the accompanying drawings, and the novel features thereof are Specification of Letters Patent.

Application filed April 15, 1814.

Also, where the two.

Patented Sept. 8, 1914:.

Serial No. 832,023.

clearly pointed out and distinctly claimed in the claim at the close of this specification.

in the drawings, Figure 1 is a side elevation of a section of culvert embodying my invention. Fig. 2 is a transverse section on line 2---2 of the culvert shown in Fig. 1. Fig. 3 is a section on the line 33 of Fig. 1 on an enlarged scale. Fig. 1 is a horizontal section on line 44 Fig. 3. Fig. 5 shows the parts of the culvert separated.

Referring now to the drawings, the culvert consists of the upper and lower halves 11 and 12, each of which in the form shown in the drawings, is made of half round pieces of corrugated iron. These halves are of sufficient peripheral length to overlap on the sides and form a culvert of substantially circular cross section.

At 13, is shown a longitudinal member secured to the lower half 12 by means of bolts or rivets 1st. This longitudinal member 18 is flat and does not follow the corrugations of the two halves of the culvert. It is made preferably with its upper edge 15 folded in as shown in Fig. 2 and its lower edge 16 inturned to form a triple thickness of metal at this point. By forming the longitudinal member as described, a space is formed between the lower half and the inside surface of the longitudinal member within which the upper half is conveniently received. It will also be seen that the upper half 11 rests on the edge of the inturned portion 16, as shown in Fig. 3.

At 17, 17 are shown wire connecting members which extend around the periphery of the two halves of the culvert when assembled, being twisted together as shown at 18, Fig. 2. As will be readily understood, the load on the upper half of the culvert rests on the upper edge of the inturned portion of the longitudinal member 13 and the flexible connecting members 17 do not carry any part of this load. It will also be seen that when the culvert has been put in place and it is necessary for any reasonto get at the interior of the culvert it is only necessary to disengage the ends of the flexible connecting member 1'? and lift out the upper half. This can be done without the use of tools and without reaching into the inside of the culvert or cutting the bolts or rivets, as has heretofore been frequently necessary. Should any of the bolts or rivets 14 become rusted or broken by wear they may be readily replaced after the upper half 11 has been lifted oil as explained. It will also be seen that any mud or silt which enters the space between the longitudinal member and the upper edge of the lower half will not pass into the interior of the culvert but will pass out through the space 19, see Fig. l, between the longitudinal member and the corrugated wall of the lower half 12.

What I claim is:

The improved culvert comprising a lower half and an upper half of corrugated metal, longitudinal members secured to each side of one half, said longitudinal. member having its lower edge composed of a plurality of thicknesses of metal whereby a space for the reception of the upper half is left between the inner edge of the longitudinal member and the outer edge of the half to which it is secured said inturned edge form ing a support for the other half, belts or rivets securing said longitudinal member and a flexible retaining member passing about said upper and lower halves.

In testimony whereof .ll afiix my signature, in presence of two witnesses.

JAMES P. DOLAN.

Witnesses GEORGE P. DIKE, ALICE H. Monurson.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, b. U. 

